Improvement in snap-hooks



UNITED STATES PATENT FF'ICE. I

ALONZO MOMANUS, OF N EW BBITAIN,CONNECTICUT, ASSIGNOR TONORTH & J UDDMANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT `|N SNAP-HOOKS.

Specification forming part of Letters Patent N o. 58,350, datedSeptember 25, 1866.

To all 'whom 'it may concern:

Be it known that I, ALoNzo McMANUs, of New Britain, Hartford county, andState of Connecticut, have invented a certain new and useful Improvementin Snap-Hooks; and I do hereby declare the following description andaccompanying drawings are suflicient to enable any person skilled in theart or science to which it most nearly appertains to make and use mysaid invention or improvement without further invention or experiment.

Tl" nature of my invention and improvement consists in countersinking orconstructingthe shank of the hook with a recess for the reception of theend of the spring therein, and combining therewith a solid bridgearranged transversely thereover for the retention of the spring thereinby means of the center of the bridge thereof being forced down thereonby the tap of a hammer.

Figure l is a view of the hook,showing the manner of attaching thespring to the inner' face of the shank of the same and the means bywhich it is held thereto; Fig. 2, a longitudinal sectional view of thehook as indicated by the line :c y in Fig. 1.

Like letters in both figures of the drawings indicate like parts.

The hook is represented by the letter A, the spring by the letter B. Onthe inner face ofthe shank of the hookthe point at which the spring isusually attacheda recess or depression, a, in the casting of the hook ismade therein, (see Fig. 2,) sufficient in depth and width to receive thelarger end of the spring, (see Fig. 1,) the recess beginning a little inthe rear of the slot b through the shank, and extending a little forwardof the same, with a slight inclination to the surface of the shank, sothat the spring may be suitably adapted thereto. In the casting of thehook, also, and

at the same time, a bridge, c, is formed transversely and centrally overthe slot, the ends of the bridge being cast with the face side of theshank.

The tapering end of the spring is introduced under the bridge from therear side thereof, and brought out at the forward part of the same untilthe larger end of the spring slips into the recess, when, by the slighttap of a hammer on the top of the bridge, in the center thereof, it isdepressed down firmly onto the spring, which is thus held and rigidlyretained inthe recess by the bridge.

The tapering end of the spring may be introduced through the slot fromthe outer side of the shank forward of the bridge, and the larger end ofthe same slipped back under the bridge into the recess, and thenfastened.

It will be observed that-the sides of the recess prevent any lateralmovement of the spring or any possible chance of its slipping to therear.

If the spring breaks or becomes weak from usage, by means of a punchinserted in the slot on the outer side of the shank onto the back sideof the spring, and with a hammer, the bridge may be elevated to itsoriginal position, so that the spring may be taken out and a new onesubstituted in lieu thereof.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

Constructing the recess a, and combining therewith the solid bridge c,arranged transversely over the spring B, in connection with the slot b,substantially in the manner and for the purpose as herein described.

ALONZO MCMANUS. Witnesses:

O. S. NORTH, J. E. WIGHTMAN.

